Laser Harp: Build It Yourself

A recent issue of Make magazine (http://makezine.com/15/) was devoted to build-them-yourself, high-tech musical instruments. Among the most impressive is a laser harp invented by tech musician Stephen Hobley.

You coax out the computer-generated sounds by waving your hands to break the light beams and change their lengths.

To build a laser harp, you’ll need to be comfortable with such things as MIDI (Musical Instrument Digital Interface) technology, circuit boards, photo cells, voltage regulators, and computers. If you’re not a serious amateur music technologist who’s been tinkering for years in the garage, you’ll need to buy or collect a significant amount of hardware and software.

Stephen’s article in Make does include a simpler project—a single-beam “laser theremin,” as opposed to the six-beam laser harp. But even that’s a pretty complex gizmo. (Note: We received an email from Geoffrey Rose notifying us that he invented the Laser Harp.)